It will not be violent, promise. You want description, huh? Beware, a little spoiler. Here you go. Twilight summons a human to Equestria, because according to the prophecy only he could help ponies. Then all hell breaks loose, Celestia's madness starts to ruin everything. Unicorn magic is blocked and many important characters end up in dungeon. What happens then, i dont really know yet, I am still working on it. I will upload chapters as soon as i retype them to my PC, because i was handwriting them for now.

PS. It can be dark at moments so I marked it, but it is not really grimdark.